From e08eb9ca1dc832e0c8b460459fe218622f231898 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 20 Jan 2009 06:44:16 +0000 Subject: Refactor code. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62573 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SimpleRegisterCoalescing.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'lib/CodeGen/SimpleRegisterCoalescing.h') diff --git a/lib/CodeGen/SimpleRegisterCoalescing.h b/lib/CodeGen/SimpleRegisterCoalescing.h index 71a64a2..a4f0fa3 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.h +++ b/lib/CodeGen/SimpleRegisterCoalescing.h @@ -232,6 +232,20 @@ namespace llvm { bool HasIncompatibleSubRegDefUse(MachineInstr *CopyMI, unsigned VirtReg, unsigned PhysReg); + /// CanJoinExtractSubRegToPhysReg - Return true if it's possible to coalesce + /// an extract_subreg where dst is a physical register, e.g. + /// cl = EXTRACT_SUBREG reg1024, 1 + bool CanJoinExtractSubRegToPhysReg(MachineInstr *CopyMI, + unsigned DstReg, unsigned SrcReg, + unsigned SubIdx, unsigned &RealDstReg); + + /// CanJoinInsertSubRegToPhysReg - Return true if it's possible to coalesce + /// an insert_subreg where src is a physical register, e.g. + /// reg1024 = INSERT_SUBREG reg1024, c1, 0 + bool CanJoinInsertSubRegToPhysReg(MachineInstr *CopyMI, + unsigned DstReg, unsigned SrcReg, + unsigned SubIdx, unsigned &RealDstReg); + /// RangeIsDefinedByCopyFromReg - Return true if the specified live range of /// the specified live interval is defined by a copy from the specified /// register. -- cgit v1.1